Ascocarps in vertical section intraepidermal, upper wall up to 20 µm wide, uniform in width across ascocarp, comprising dark brown, thick-walled, angular cells. Inside of upper wall near ascocarp opening lined with a layer of 10-20 x 2-3 µm cylindric cells. These cells mostly hyaline, becoming dark brown at apex. Lower wall 10-15 µm wide, of dark brown, thick-walled cells.

Paraphyses 1.5-2 µm diam., swelling to 2.5-4.5 µm diam. at apex, often branching 1-2 times 20-30 µm from apex, embedded in gel, extending 20-30 µm beyond asci. Asci 125-155 x 4.5-6.5 µm, cylindric, tapering to small, truncate apex, wall thickened near apex with broad, central pore, 8-spored. Ascospores 85-115 x 1-1.5 µm, 0-1 septate, with indistinct gelatinous sheath.

Pycnidia in vertical section intraepidermal. Upper wall absent or poorly developed. Lower wall comprising 2-3 layers of pale brown, thin-walled cells. Conidiogenous cells lining lower wall, 6.5-9 x 2.5-3.5 µm, hyaline, flask-shaped, sympodial. Conidia 3.5-4 x 0.8-1 µm, cylindric, hyaline, 0 septate.

ETYMOLOGY: unciniae; refers to host substrate of holotype.

NOTES: See notes under L. hauturuanum.